diff --git a/owlps-positioning/cfg/owlps-positioning.cfg b/owlps-positioning/cfg/owlps-positioning.cfg
index aa0e1f5..02f555e 100644
--- a/owlps-positioning/cfg/owlps-positioning.cfg
+++ b/owlps-positioning/cfg/owlps-positioning.cfg
@@ -1,5 +1,8 @@
 # Sample configuration file for OWLPS Positioning
 
+# Miscellaneous options
+#flush-output-files = true
+
 [data-input]
 
 #ap-medium = CSV
diff --git a/owlps-positioning/src/textfilewriter.cc b/owlps-positioning/src/textfilewriter.cc
index 6da0502..30aadb1 100644
--- a/owlps-positioning/src/textfilewriter.cc
+++ b/owlps-positioning/src/textfilewriter.cc
@@ -1,4 +1,5 @@
 #include "textfilewriter.hh"
+#include "configuration.hh"
 #include "posexcept.hh"
 
 using namespace std ;
@@ -41,5 +42,9 @@ bool TextFileWriter::write_text(const string &text)
     return false ;
 
   file << text ;
+
+  if (Configuration::bool_value("flush-output-files"))
+    file.flush() ;
+
   return true ;
 }
diff --git a/owlps-positioning/src/userinterface.cc b/owlps-positioning/src/userinterface.cc
index 625b0e1..82d67cd 100644
--- a/owlps-positioning/src/userinterface.cc
+++ b/owlps-positioning/src/userinterface.cc
@@ -87,6 +87,7 @@ void UserInterface::fill_file_options()
   fill_log_options() ;
   fill_positioning_options() ;
   fill_output_options() ;
+  fill_misc_options() ;
 }
 
 
@@ -192,6 +193,19 @@ If this option is absent, results will be printed on the terminal.")
 }
 
 
+void UserInterface::fill_misc_options()
+{
+  po::options_description options("Miscellaneous options") ;
+
+  options.add_options()
+  ("flush-output-files", po::value<bool>()->default_value(true),
+   "Flush output text files after each line.")
+  ;
+
+  file_options->add(options) ;
+}
+
+
 void UserInterface::parse_options()
 {
   parse_command_line() ;
diff --git a/owlps-positioning/src/userinterface.hh b/owlps-positioning/src/userinterface.hh
index b1ce265..c57bfd8 100644
--- a/owlps-positioning/src/userinterface.hh
+++ b/owlps-positioning/src/userinterface.hh
@@ -29,6 +29,7 @@ protected:
   void fill_log_options(void) ;
   void fill_positioning_options(void) ;
   void fill_output_options(void) ;
+  void fill_misc_options(void) ;
 
   /// Parse all the configuration inputs and updates Configuration
   void parse_options(void) ;